Answer
$\frac{1}{5}$
Work Step by Step
$\frac{width}{perimeter}=\frac{30}{30+45+30+45}=\frac{30}{150}=\frac{30\div30}{150\div30}=\frac{1}{5}$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 6 - Section 6.1 - Ratios and Rates - Exercise Set - Page 416: 20
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